Siksikpuk River

Occurrence, Inactive

Commodities and mineralogy

Main commodities Pb; Zn
Other commodities Ba
Ore minerals galena; pyrite; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale CL
Latitude 68.3
Longitude -150.2
Nearby scientific data Find additional scientific data near this location
Location and accuracy Located at headwaters of Siksikpuk River, 8.7 km northwest of Inualuruk Mountain. Known to within one mile.

Geologic setting

Geologic description

Red-brown concretions in Kayak Shale are confined to an approximately 6 m-thick section of black shale. They range from 4 cm rounded forms to 7.5 x 38 cm flattened, elongate forms. The concretions contain quartz, calcite, barite, siderite, and pyrite as septarian fracture fillings along with minor sphalerite and trace galena. At the base of the shale, a 10 cm-thick red-brown cherty ironstone bed contains minor sphalerite. The ironstone bed is exposed along strike for 6 m.
Geologic map unit (-150.202797798888, 68.2995982817987)
Mineral deposit model Sediment-hosted Pb-Zn.
Age of mineralization Mississippian.

Production and reserves

Workings or exploration Sulfide-bearing concretions contain 1.3 percent Zn, more than 2,000 ppm Ba, and 52 ppm Pb. The ironstone bed contains 1,357 ppm Zn.
Indication of production None

References